CN108899100B - A sealing structure for maintenance of a pebble bed high temperature reactor - Google Patents
A sealing structure for maintenance of a pebble bed high temperature reactor Download PDFInfo
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- CN108899100B CN108899100B CN201810731858.3A CN201810731858A CN108899100B CN 108899100 B CN108899100 B CN 108899100B CN 201810731858 A CN201810731858 A CN 201810731858A CN 108899100 B CN108899100 B CN 108899100B
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- 238000007789 sealing Methods 0.000 title claims abstract description 117
- 238000012423 maintenance Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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Abstract
本发明涉及反应堆装备维修用密封设备技术领域，公开了一种球床高温堆装置维修用密封结构，包括：筒体，在筒体的上端构造有开口；密封端板，密封端板设置在筒体的开口部位；压套，压套套设在筒体的外围并能沿筒体的轴向进行上下往复滑动，筒体的底端的上表面和压套的底端的下表面共同构造有环槽；密封部件，密封部件设置在环槽内；以及旋紧按压部件，旋紧按压部件套设在筒体的外围并位于压套的上部，其中，通过旋紧该旋紧按压部件，旋紧按压部件会促使压套沿筒体的轴向向下运动并挤压密封部件发生形变以封堵环槽。该密封结构具有能较好地实现对球床高温堆装置的内外压力、气氛和粉尘的隔离的优点。
The invention relates to the technical field of sealing equipment for reactor equipment maintenance, and discloses a sealing structure for pebble bed high-temperature reactor equipment maintenance, which includes: a cylinder body, an opening is formed at the upper end of the cylinder body; a sealing end plate, the sealing end plate is arranged on the cylinder body The opening part of the body; the pressure sleeve, the pressure sleeve is arranged on the periphery of the cylinder and can reciprocate up and down along the axial direction of the cylinder, and the upper surface of the bottom end of the cylinder and the lower surface of the bottom end of the pressure sleeve are jointly constructed with a ring groove; A sealing component, the sealing component is arranged in the ring groove; and a tightening pressing component, the tightening pressing component is sleeved on the periphery of the cylinder and located on the upper part of the pressing sleeve, wherein, by tightening the tightening pressing component, the tightening pressing component It will prompt the pressure sleeve to move downward along the axial direction of the barrel and squeeze the sealing part to deform to seal the ring groove. The sealing structure has the advantage of better realizing the isolation of the internal and external pressure, atmosphere and dust of the pebble bed high temperature reactor device.
Description
技术领域technical field
本发明涉及反应堆装备维修用密封设备技术领域，特别是涉及一种球床高温堆装置维修用密封结构。The invention relates to the technical field of sealing equipment for reactor equipment maintenance, in particular to a sealing structure for pebble bed high temperature reactor equipment maintenance.
背景技术Background technique
球床式高温气冷堆是以天然铀为燃料，石墨为慢化剂，氦气为冷却剂。球床式高温气冷堆的装卸料装置及输送转换装置均采用磁力传动器来实现静态氦气密封下的动力传输，当磁力传动器需要维修或更换时，在移除磁力传动器后，应采用措施将装置内部与外部气氛隔离，并防止内部粉尘外溢，因而需要用到装、拆便利，并能实现装置内外密封隔离的维修专用结构。The pebble bed high temperature gas-cooled reactor uses natural uranium as fuel, graphite as moderator, and helium as coolant. The loading and unloading device and the conveying conversion device of the pebble bed high temperature gas-cooled reactor all use a magnetic drive to realize the power transmission under the static helium seal. When the magnetic drive needs to be repaired or replaced, after removing the magnetic drive, it should be Measures are taken to isolate the interior of the device from the external atmosphere and prevent internal dust from spilling out. Therefore, it is necessary to use a maintenance-specific structure that is convenient for assembly and disassembly, and can realize the sealing and isolation of the inside and outside of the device.
发明内容Contents of the invention
(一)要解决的技术问题(1) Technical problems to be solved
本发明的目的是提供一种球床高温堆装置维修用密封结构，以解决现有技术中在移除磁力传动器后，应采用措施将装置内部与外部气氛隔离，并防止内部粉尘外溢的技术问题。The purpose of the present invention is to provide a sealing structure for maintenance of a pebble bed high-temperature reactor device to solve the problem in the prior art that measures should be taken to isolate the inside of the device from the outside atmosphere and prevent the internal dust from spilling out after the magnetic drive is removed. question.
(二)技术方案(2) Technical solution
为了解决上述技术问题，本发明提供一种球床高温堆装置维修用密封结构，包括：筒体，在所述筒体的上端构造有开口；密封端板，所述密封端板设置在所述筒体的开口部位；压套，所述压套套设在所述筒体的外围并能沿所述筒体的轴向进行上下往复滑动，所述筒体的底端的上表面和所述压套的底端的下表面共同构造有环槽；密封部件，所述密封部件设置在所述环槽内；以及旋紧按压部件，所述旋紧按压部件套设在所述筒体的外围并位于所述压套的上部，其中，通过旋紧所述旋紧按压部件，所述旋紧按压部件会促使所述压套沿所述筒体的轴向向下运动并挤压所述密封部件发生形变以封堵所述环槽。In order to solve the above technical problems, the present invention provides a sealing structure for pebble bed high-temperature reactor maintenance, including: a cylinder, an opening is formed on the upper end of the cylinder; a sealing end plate, the sealing end plate is arranged on the The opening part of the cylinder; the pressure sleeve, the pressure sleeve is set on the periphery of the cylinder and can reciprocate up and down along the axial direction of the cylinder, the upper surface of the bottom end of the cylinder and the pressure sleeve The lower surface of the bottom end of the bottom end is jointly configured with an annular groove; a sealing part, the sealing part is arranged in the annular groove; and a screwing pressing part, the screwing pressing part is sleeved on the periphery of the cylinder and is located at the The upper part of the pressing sleeve, wherein, by tightening the tightening and pressing part, the tightening and pressing part will promote the downward movement of the pressing sleeve along the axial direction of the cylinder and press the sealing part to deform To block the ring groove.
其中，在所述筒体的底端设有与所述筒体的底端相连接并朝外侧延伸的环形密封槽台。Wherein, an annular sealing groove platform connected with the bottom end of the cylinder body and extending outward is provided at the bottom end of the cylinder body.
其中，所述环形密封槽台包括与所述筒体的底端相连接并朝外侧延伸的第一环状体和与所述第一环状体相连接并朝外侧延伸的第二环状体，其中，所述第一环状体的上表面所在的水平面高于所述第二环状体的上表面所在的水平面。Wherein, the annular sealing groove platform includes a first annular body connected to the bottom end of the cylinder and extending outward, and a second annular body connected to the first annular body and extending outward , wherein the level of the upper surface of the first annular body is higher than the level of the upper surface of the second annular body.
其中，在所述压套的底端构造有凸环，所述凸环套设在所述第一环状体的外围。Wherein, a protruding ring is configured at the bottom end of the pressure sleeve, and the protruding ring is sleeved on the periphery of the first annular body.
其中，所述凸环的内径与所述第一环状体的外径相同，所述凸环的外径与所述第二环状体的外径相同。Wherein, the inner diameter of the protruding ring is the same as the outer diameter of the first annular body, and the outer diameter of the protruding ring is the same as the outer diameter of the second annular body.
其中，所述凸环包括水平部和与所述水平部相连接的竖直挤压部，其中，所述竖直挤压部的下表面、所述第一环状体的外侧面以及所述第二环状体的上表面共同构造成开口朝向外侧的所述环槽。Wherein, the protruding ring includes a horizontal part and a vertical extruding part connected with the horizontal part, wherein, the lower surface of the vertical extruding part, the outer surface of the first annular body and the The upper surfaces of the second annular body are jointly configured to form the annular groove with an opening facing the outside.
其中，所述密封部件的制造材质为柔性材料。Wherein, the sealing component is made of flexible material.
其中，所述密封部件包括密封条、密封圈、密封环之一。Wherein, the sealing component includes one of a sealing strip, a sealing ring, and a sealing ring.
其中，在所述压套的内环壁上构造有开口朝向所述压套的中心轴线方向的密封环槽，在所述密封环槽内嵌设有滑动密封部件。Wherein, a seal ring groove with an opening facing the central axis of the press sleeve is configured on the inner ring wall of the press sleeve, and a sliding sealing component is embedded in the seal ring groove.
其中，所述旋紧按压部件包括旋紧螺母。Wherein, the tightening and pressing part includes a tightening nut.
(三)有益效果(3) Beneficial effects
本发明提供的密封结构，与现有技术相比，具有如下优点：Compared with the prior art, the sealing structure provided by the present invention has the following advantages:
当需要对磁力传动器进行维修或更换时，在移除磁力传动器后，可将本申请的球床高温堆装置维修用密封结构插入到球床高温堆装置内的基体轴孔内，通过旋紧上述旋紧按压部件，该旋紧按压部件会沿着筒体的轴向逐渐向下运动，即，朝压套的方向运动，当该旋紧按压部件的下端与压套的上端相接触后，继续旋紧该旋紧按压部件，该旋紧按压部件会施加给该压套沿轴向向下的挤压力，进一步地，该压套的下端在该挤压力的作用下，会挤压密封部件发生沿径向向外的形变，从而使得该密封部件实现对上述环槽的密封，进一步地，实现对上述基体轴孔的封堵，从而达到将球床高温堆装置的内部与外部的气氛进行隔离的目的，同时，还可以起到防止内部粉尘外溢的作用。此外，本申请的球床高温堆装置维修用密封结构还具有结构简单和装、拆便利的优点。When the magnetic driver needs to be repaired or replaced, after the magnetic driver is removed, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application can be inserted into the base shaft hole in the pebble bed high temperature reactor device, and the Tighten the tightening and pressing part, the tightening and pressing part will gradually move downward along the axial direction of the cylinder, that is, move towards the direction of the pressure sleeve, when the lower end of the tightening and pressing part contacts the upper end of the pressure sleeve , continue to tighten the tightening pressing part, and the tightening pressing part will exert an axially downward extrusion force on the compression sleeve, and further, the lower end of the compression sleeve will squeeze under the action of the extrusion force. The pressure sealing component is deformed radially outward, so that the sealing component can seal the above-mentioned annular groove, and further, realize the sealing of the above-mentioned base shaft hole, so as to achieve the internal and external pressure of the spherical bed high-temperature reactor device. At the same time, it can also play a role in preventing internal dust from spilling out. In addition, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application also has the advantages of simple structure and convenient assembly and disassembly.
附图说明Description of drawings
图1为本申请的实施例的球床高温堆装置维修用密封结构的整体结构示意图。FIG. 1 is a schematic diagram of the overall structure of a sealing structure for maintenance of a pebble bed high temperature reactor device according to an embodiment of the present application.
图中，1：筒体；11：上表面；12：环形密封槽台；121：第一环状体；121a：第一环状体的上表面；121b：外侧面；122：第二环状体；122a：第二环状体的上表面；2：密封端板；3：压套；31：下表面；32：凸环；321：水平部；322：竖直挤压部；322a：下表面；33：密封环槽；4：环槽；5：密封部件；6：旋紧按压部件；7：滑动密封部件；200：基体轴孔。In the figure, 1: cylinder body; 11: upper surface; 12: annular sealing groove platform; 121: first annular body; 121a: upper surface of first annular body; 121b: outer surface; 122: second annular body body; 122a: upper surface of the second annular body; 2: sealing end plate; 3: pressure sleeve; 31: lower surface; 32: convex ring; 321: horizontal part; 322: vertical extrusion part; 322a: lower Surface; 33: sealing ring groove; 4: ring groove; 5: sealing part; 6: screwing and pressing part; 7: sliding sealing part; 200: base shaft hole.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
实施例1：Example 1:
如图1所示，图中示意性地显示了该球床高温堆装置维修用密封结构包括筒体1、密封端板2、压套3、环槽4、密封部件5以及旋紧按压部件6。As shown in Figure 1, it schematically shows that the sealing structure for maintenance of the pebble bed high temperature reactor device includes a cylinder body 1, a sealing end plate 2, a pressure sleeve 3, an annular groove 4, a sealing part 5 and a tightening and pressing part 6 .
在本申请的实施例中，该筒体1的下端与球床高温堆装置内的基体轴孔同轴安装。容易理解，该筒体1为中空筒形结构。In the embodiment of the present application, the lower end of the cylinder body 1 is installed coaxially with the base shaft hole in the pebble bed high temperature reactor device. It is easy to understand that the cylinder body 1 is a hollow cylindrical structure.
在该筒体1的上端构造有开口。An opening is formed at the upper end of the cylinder body 1 .
密封端板2设置在该筒体1的开口部位。也就是说，该密封端板2的设置，主要起到密封的作用，即，对筒体1的上端的开口进行封堵，起到密封的作用。The sealing end plate 2 is arranged at the opening of the cylinder body 1 . That is to say, the setting of the sealing end plate 2 mainly plays the role of sealing, that is, it seals the opening of the upper end of the cylinder body 1 and plays the role of sealing.
需要说明的是，所谓的“上端”和“下端”均是按照图示方位进行的说明，其并不代表实际安装时的方位，实际安装时，所谓的“上端”和“下端”还可分别为“左端”和“右端”。It should be noted that the so-called "upper end" and "lower end" are all described according to the orientation shown in the figure, and do not represent the actual installation orientation. In actual installation, the so-called "upper end" and "lower end" can also be respectively as "left end" and "right end".
在一个具体的实施例中，该密封端板2可以与筒体1一体成型，也可以通过螺栓或黏胶等方式将其固定在筒体1的上端的开口部位。需要说明的是，该密封端板2只要能够实现对该筒体1的上端的开口的封堵和密封的作用即可，对于该密封端板2的具体固定方式并不做限定。In a specific embodiment, the sealing end plate 2 can be integrally formed with the cylinder body 1 , and can also be fixed to the opening at the upper end of the cylinder body 1 by means of bolts or glue. It should be noted that as long as the sealing end plate 2 can realize the function of blocking and sealing the opening of the upper end of the cylinder body 1 , the specific fixing method of the sealing end plate 2 is not limited.
该压套3套设在该筒体1的外围并能沿该筒体1的轴向进行上下往复滑动，该筒体1的底端的上表面11和该压套3的底端的下表面31共同构造有环槽4。The pressure sleeve 3 is sleeved on the periphery of the cylinder 1 and can reciprocate up and down along the axial direction of the cylinder 1. The upper surface 11 of the bottom end of the cylinder 1 and the lower surface 31 of the bottom end of the pressure sleeve 3 share A ring groove 4 is formed.
密封部件5设置在该环槽4内。The sealing member 5 is arranged in the ring groove 4 .
该旋紧按压部件6套设在该筒体1的外围并位于该压套3的上部，其中，通过旋紧该旋紧按压部件6，该旋紧按压部件6会促使该压套3沿该筒体1的轴向向下运动并挤压该密封部件5发生形变以封堵该环槽4。具体地，当需要对磁力传动器(图中未示出)进行维修或更换时，在移除磁力传动器后，可将本申请的球床高温堆装置维修用密封结构插入到球床高温堆装置内的基体轴孔200内，通过旋紧上述旋紧按压部件6，该旋紧按压部件6会沿着筒体1的轴向逐渐向下运动，即，朝压套3的方向运动，当该旋紧按压部件6的下端与压套3的上端相接触后，继续旋紧该旋紧按压部件6，该旋紧按压部件6会施加给该压套3沿轴向向下的挤压力，进一步地，该压套3的下端在该挤压力的作用下，会挤压密封部件5发生沿径向向外的形变，从而使得该密封部件5实现对上述环槽4的密封，进一步地，实现对上述基体轴孔200的封堵，从而达到将球床高温堆装置的内部与外部的气氛进行隔离的目的，同时，还可以起到防止内部粉尘外溢的作用。此外，本申请的球床高温堆装置维修用密封结构还具有结构简单和装、拆便利的优点。The tightening pressing part 6 is sleeved on the periphery of the cylinder body 1 and located on the upper part of the pressing sleeve 3, wherein, by tightening the tightening pressing part 6, the tightening pressing part 6 will push the pressing sleeve 3 along the The cylinder body 1 moves downward axially and presses the sealing member 5 to be deformed to seal the ring groove 4 . Specifically, when the magnetic drive (not shown in the figure) needs to be repaired or replaced, after the magnetic drive is removed, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application can be inserted into the pebble bed high temperature stack In the shaft hole 200 of the base body in the device, by tightening the above-mentioned tightening and pressing member 6, the tightening and pressing member 6 will gradually move downward along the axial direction of the cylinder body 1, that is, move toward the direction of the pressure sleeve 3, when After the lower end of the tightening pressing part 6 is in contact with the upper end of the pressing sleeve 3, continue to tighten the tightening pressing part 6, and the tightening pressing part 6 will exert an axially downward extrusion force on the pressing sleeve 3 Further, under the action of the extrusion force, the lower end of the compression sleeve 3 will press the sealing member 5 to deform radially outward, so that the sealing member 5 can seal the above-mentioned annular groove 4, further In this way, the above-mentioned axis hole 200 of the base body can be blocked, so as to achieve the purpose of isolating the inside of the ball bed high temperature reactor device from the outside atmosphere, and at the same time, it can also play a role in preventing the internal dust from spilling out. In addition, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application also has the advantages of simple structure and convenient assembly and disassembly.
需要说明的是，在旋紧上述旋紧按压部件6时，可以规定“顺时针旋转为旋紧”，“逆时针旋转为旋松”，或者“逆时针旋转为旋紧”，“顺时针旋转为旋松”。It should be noted that when tightening the above-mentioned tightening pressing member 6, it can be stipulated that "clockwise rotation is tightening", "counterclockwise rotation is loosening", or "counterclockwise rotation is tightening", "clockwise rotation For unscrewing".
在一个实施例中，为确保该球床高温堆装置维修用密封结构的整体结构强度，上述筒体1、密封端板2、压套3以及旋紧按压部件6的制造材质均可为不锈钢或碳钢。In one embodiment, in order to ensure the overall structural strength of the sealing structure for maintenance of the pebble bed high temperature reactor device, the above-mentioned cylinder body 1, sealing end plate 2, pressure sleeve 3 and tightening and pressing parts 6 can all be made of stainless steel or carbon steel.
如图1所示，为进一步优化上述技术方案中的筒体1，在上述技术方案的基础上，在该筒体1的底端设有与该筒体1的底端相连接并朝外侧延伸的环形密封槽台12。需要说明的是，该环形密封槽台12的设置，可以起到对密封部件5的挤压作用，从而使得密封部件5能够发生形变，实现对环槽4的封堵。As shown in Figure 1, in order to further optimize the cylinder 1 in the above-mentioned technical solution, on the basis of the above-mentioned technical solution, a The annular sealing groove platform 12. It should be noted that the arrangement of the annular sealing groove platform 12 can exert a pressing effect on the sealing member 5 , so that the sealing member 5 can be deformed and the sealing of the annular groove 4 can be realized.
如图1所示，为进一步优化上述技术方案中的环形密封槽台12，在上述技术方案的基础上，该环形密封槽台12包括与该筒体1的底端相连接并朝外侧延伸的第一环状体121和与该第一环状体121相连接并朝外侧延伸的第二环状体122，其中，该第一环状体121的上表面121a所在的水平面高于该第二环状体122的上表面122a所在的水平面。容易理解，该第一环状体121与第二环状体122共同形成的截面形状类似为“阶梯状”。As shown in Figure 1, in order to further optimize the annular sealing groove platform 12 in the above technical solution, on the basis of the above technical solution, the annular sealing groove platform 12 includes a The first annular body 121 and the second annular body 122 connected to the first annular body 121 and extending outward, wherein the upper surface 121a of the first annular body 121 is located at a level higher than that of the second annular body 121. The horizontal plane where the upper surface 122a of the annular body 122 is located. It is easy to understand that the cross-sectional shape jointly formed by the first annular body 121 and the second annular body 122 is similar to a "stepped shape".
在一个优选的实施例中，在该压套3的底端构造有凸环32，该凸环32套设在该第一环状体121的外围。也就是说，该凸环32的内表面与第一环状体121露置的外表面相贴合。In a preferred embodiment, a protruding ring 32 is configured at the bottom end of the pressing sleeve 3 , and the protruding ring 32 is sleeved on the periphery of the first annular body 121 . That is to say, the inner surface of the protruding ring 32 is in contact with the exposed outer surface of the first annular body 121 .
需要说明的是，当该旋紧按压部件6的旋紧程度达到上限时，该凸环32的底部挤压该密封部件5的挤压程度也达到最大，此时，该密封部件5沿径向向外发生形变的变形量也达到最大，从而可以实现对该环槽4的较好密封。进一步地，实现对基体轴孔200的封堵。It should be noted that, when the tightening degree of the tightening pressing part 6 reaches the upper limit, the pressing degree of the bottom of the protruding ring 32 against the sealing part 5 also reaches the maximum, and at this time, the sealing part 5 The outward deformation is also maximized, so that a better sealing of the ring groove 4 can be achieved. Further, the sealing of the base shaft hole 200 is realized.
在一个优选的实施例中，该凸环32的内径与该第一环状体121的外径相同，该凸环32的外径与该第二环状体122的外径相同。这样，通过使得该凸环32的内径与该第一环状体121的外径相同，从而可以实现该凸环32的内轮廓面与第一环状体121的外轮廓面进行很好地匹配，同时，通过使得该凸环32的外径与该第二环状体122的外径相同，从而可以方便该球床高温堆装置维修用密封结构能够顺利地插入到球床高温堆装置内的基体轴孔200内，避免由于该凸环32的外径与该第二环状体122的外径不一致，从而发生位置干涉，造成无法顺利插入到球床高温堆装置内的基体轴孔200内的情况。In a preferred embodiment, the inner diameter of the protruding ring 32 is the same as the outer diameter of the first annular body 121 , and the outer diameter of the protruding ring 32 is the same as the outer diameter of the second annular body 122 . In this way, by making the inner diameter of the protruding ring 32 the same as the outer diameter of the first annular body 121, the inner contour surface of the protruding ring 32 can be well matched with the outer contour surface of the first annular body 121. At the same time, by making the outer diameter of the protruding ring 32 the same as the outer diameter of the second annular body 122, it is convenient for the sealing structure for maintenance of the pebble bed high temperature reactor to be smoothly inserted into the pebble bed high temperature reactor. In the shaft hole 200 of the base body, it is avoided that the outer diameter of the convex ring 32 is inconsistent with the outer diameter of the second annular body 122, resulting in positional interference, resulting in the inability to be smoothly inserted into the shaft hole 200 of the base body in the pebble bed high temperature reactor device Case.
如图1所示，为进一步优化上述技术方案中的凸环32，在上述技术方案的基础上，该凸环32包括水平部321和与该水平部321相连接的竖直挤压部322，其中，该竖直挤压部322的下表面322a、该第一环状体121的外侧面121b以及该第二环状体122的上表面122a共同构造成开口朝向外侧的上述环槽4。容易理解，上述环槽4的设置，主要起到容纳密封部件5的作用，并且，由于该环槽4的开口朝向外侧，即，朝向基体轴孔200的内孔壁，这样，当上述凸环32的竖直挤压部322挤压到该密封部件5时，该密封部件5会发生沿径向向外的形变，发生形变后的密封部件5会与该基体轴孔200的内孔壁紧密接触，从而实现对基体轴孔200的封堵。As shown in Figure 1, in order to further optimize the protruding ring 32 in the above technical solution, on the basis of the above technical solution, the protruding ring 32 includes a horizontal part 321 and a vertical extrusion part 322 connected with the horizontal part 321, Wherein, the lower surface 322a of the vertical extruding portion 322, the outer surface 121b of the first annular body 121 and the upper surface 122a of the second annular body 122 are jointly configured to form the above-mentioned annular groove 4 with an opening facing outward. It is easy to understand that the arrangement of the above-mentioned annular groove 4 mainly plays the role of accommodating the sealing member 5, and since the opening of the annular groove 4 faces outward, that is, towards the inner hole wall of the base shaft hole 200, when the above-mentioned protruding ring When the vertical extrusion part 322 of 32 is pressed against the sealing member 5, the sealing member 5 will be deformed radially outward, and the deformed sealing member 5 will be tightly connected to the inner hole wall of the shaft hole 200 of the base body. contact, so as to realize the sealing of the shaft hole 200 of the base body.
在一个优选的实施例中，该密封部件5的制造材质为柔性材料。具体地，该柔性材料可为橡胶或硅胶等。In a preferred embodiment, the sealing member 5 is made of flexible material. Specifically, the flexible material can be rubber or silicone.
在一个实施例中，该密封部件5包括密封条、密封圈、密封环之一。具体地，当该密封部件5为密封条时，只需将密封条绕上述环槽4缠绕一周即可。若该密封部件5为密封圈或密封环，则只需将该密封圈或密封环套设在该第一环状体121的外围即可。In one embodiment, the sealing component 5 includes one of a sealing strip, a sealing ring, and a sealing ring. Specifically, when the sealing member 5 is a sealing strip, it only needs to wrap the sealing strip around the above-mentioned annular groove 4 once. If the sealing component 5 is a sealing ring or a sealing ring, it only needs to be sleeved on the periphery of the first annular body 121 .
此外，该密封部件5还可为金属C型圈。需要说明的是，该金属C型圈的截面形状为C形，在上述凸环32中的竖直挤压部322挤压到该金属C型圈的上部后，会使得该金属C型圈的C形截面形状发生形变，即，使得该C形截面形状朝扁宽的方向发生形变。In addition, the sealing component 5 can also be a metal C-shaped ring. It should be noted that the cross-sectional shape of the metal C-shaped ring is C-shaped. After the vertical extrusion portion 322 in the above-mentioned protruding ring 32 is squeezed to the upper part of the metal C-shaped ring, the metal C-shaped ring will The C-shaped cross-sectional shape is deformed, that is, the C-shaped cross-sectional shape is deformed in a flat-width direction.
需要说明的是，为确保该密封圈或密封环定位的牢固性，可使得该密封圈或密封环的内径略小于第一环状体121的外径。It should be noted that, in order to ensure firm positioning of the sealing ring or the sealing ring, the inner diameter of the sealing ring or the sealing ring may be slightly smaller than the outer diameter of the first annular body 121 .
如图1所示，在本申请的实施例中，在该压套3的内环壁上构造有开口朝向该压套3的中心轴线方向的密封环槽33，在该密封环槽33内嵌设有滑动密封部件7。需要说明的是，该滑动密封部件7可随该压套3沿筒体1的轴向进行上下往复滑动，从而实现压套3与筒体1的滑动密封，由此可见，该滑动密封部件7的设置，增强了压套3与筒体1之间的密封性，进一步地，在上述密封部件5的基础上，进一步地，增强了该球床高温堆装置维修用密封结构的整体密封性，较好地实现了球床高温堆装置的内外压力、气氛和粉尘的隔离。As shown in Figure 1, in the embodiment of the present application, a sealing ring groove 33 with an opening facing the central axis direction of the pressing sleeve 3 is configured on the inner ring wall of the pressing sleeve 3, and a sealing ring groove 33 is embedded in the sealing ring groove 33. A sliding sealing member 7 is provided. It should be noted that the sliding sealing member 7 can reciprocate and slide up and down along the axial direction of the cylinder body 1 with the pressure sleeve 3, so as to realize the sliding seal between the pressure sleeve 3 and the cylinder body 1. It can be seen that the sliding sealing member 7 The arrangement of the pressure sleeve 3 and the cylinder body 1 has enhanced the sealing performance between the pressure sleeve 3 and the cylinder body 1. Further, on the basis of the above-mentioned sealing member 5, the overall sealing performance of the sealing structure for maintenance of the pebble bed high temperature reactor device has been further enhanced. The separation of internal and external pressure, atmosphere and dust of the pebble bed high temperature reactor is well realized.
在一个具体的实施例中，该旋紧按压部件6包括旋紧螺母。具体地，在该旋紧螺母的内表面构造有外螺纹，在筒体1的外表面构造有内螺纹，或者在该旋紧螺母的内表面构造有内螺纹，在该筒体1的外表面构造有外螺纹。In a specific embodiment, the tightening and pressing part 6 includes a tightening nut. Specifically, the inner surface of the tightening nut is configured with external threads, and the outer surface of the cylinder body 1 is configured with internal threads, or the inner surface of the tightening nut is configured with internal threads, and the outer surface of the cylinder body 1 is configured with internal threads. Constructed with external threads.
综上所述，当需要对磁力传动器进行维修或更换时，在移除磁力传动器后，可将本申请的球床高温堆装置维修用密封结构插入到球床高温堆装置内的基体轴孔200内，通过旋紧上述旋紧按压部件6，该旋紧按压部件6会沿着筒体1的轴向逐渐向下运动，即，朝压套3的方向运动，当该旋紧按压部件6的下端与压套3的上端相接触后，继续旋紧该旋紧按压部件6，该旋紧按压部件6会施加给该压套3沿轴向向下的挤压力，进一步地，该压套3的下端在该挤压力的作用下，会挤压密封部件5发生沿径向向外的形变，从而使得该密封部件5实现对上述环槽4的密封，进一步地，实现对上述基体轴孔200的封堵，从而达到将球床高温堆装置的内部与外部的气氛进行隔离的目的，同时，还可以起到防止内部粉尘外溢的作用。此外，本申请的球床高温堆装置维修用密封结构还具有结构简单和装、拆便利的优点。In summary, when the magnetic drive needs to be repaired or replaced, after the magnetic drive is removed, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application can be inserted into the base shaft of the pebble bed high temperature reactor device In the hole 200, by tightening the above-mentioned tightening and pressing part 6, the tightening and pressing part 6 will gradually move downward along the axial direction of the cylinder body 1, that is, move toward the direction of the compression sleeve 3, when the tightening and pressing part After the lower end of 6 is in contact with the upper end of the pressing sleeve 3, continue to tighten the tightening pressing part 6, and the tightening pressing part 6 will exert an axially downward extrusion force on the pressing sleeve 3, further, the Under the action of the extrusion force, the lower end of the compression sleeve 3 will squeeze the sealing member 5 to deform radially outward, so that the sealing member 5 can realize the sealing of the above-mentioned ring groove 4, and further realize the sealing of the above-mentioned ring groove 4. The sealing of the shaft hole 200 of the base body achieves the purpose of isolating the inside of the ball bed high temperature reactor device from the outside atmosphere, and at the same time prevents the internal dust from spilling out. In addition, the sealing structure for maintenance of the pebble bed high temperature reactor device of the present application also has the advantages of simple structure and convenient assembly and disassembly.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.
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